arm: dts: Add new "generic" 66AK2Gx device tree file.

With U-boot runtime board detect for DTB selection a "default" dtb needs
to be created. This will be used temporarily until the "proper" dtb is
selected.

Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/dts/keystone-k2g-generic-u-boot.dtsi b/arch/arm/dts/keystone-k2g-generic-u-boot.dtsi
new file mode 100644
index 0000000..4d073f3
--- /dev/null
+++ b/arch/arm/dts/keystone-k2g-generic-u-boot.dtsi
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/{
+	soc {
+		u-boot,dm-pre-reloc;
+	};
+};
+
+&i2c0 {
+	u-boot,dm-pre-reloc;
+};
+
+&i2c1 {
+	u-boot,dm-pre-reloc;
+};